We have an integration with Guesty, but for you to be able to run the integration you need the API Key from within your Guesty account. This is how to get the API Key:
Sign in to your Guesty account
In the top menu, hover over Integrations
From the drop-down menu, click Marketplace
On the Properly thumbnail, click Connect
In the top right corner, click Connect
Click the API Key to copy it
Click OK
Then, log in to your Properly account and follow these steps:
1. Click on settings (last tab on the left)
2. Select Connected Accounts
3. Find Guesty and click Connect on the right and enter the API Key
4. Click Connect Account